A must-have companion to any serious workout! From the essential Fitnus series of professional health club wall charts, this instructional poster features the eight key exercises to give you a strong, healthy, toned back. Designed in great detail to highlight the muscle groups used in each exercise, this is also a co-ed chart, so half of the images feature female figures! From the world leader in professional workout charts, Bruce Algra's Fitnus Corp. - seen on the walls of better health clubs and gyms around the world.